Automatic pressure-system lock



Nov. 27, 1928. 1,693,048 J. P. PACA 7 AUTOMATIC PRESSURE SYSTEM LOCK Filed June 16, 1926 2 Sheets-Sheet 1 O 0 j: 0 O I O0 IIIE' I I I I I I A 00 III II 00 I5 0 5.11m I; [II..-

- I U r I I O f 1 2 0 (5I I I III I II IIIII L, III 161/, OI I IIII Patented Nov. 27, 1928.

mars s'raras PATENT ()FFICE."

JOHN P. PACA, OF CANTON, OHIO, ASSIGNOR TO THE DIEBOLD SAFE & LOCK COMPANY, OF CANTON, OHIO, A CORPORATION OF OHIO.

AUTOMATIC PRESSU H-E-S YSTEM LOOK.

Application filed June 16, 1926. Serial No. 116,334.

The invention relates to automatic means for preventing unauthorized operation of the pressure systems of safe and vault doors and the like, which are customarily left open during the day.

' Such safe and the oper to effect the oper such a door it is impossible main loc vault doors, usually require ation of a pressure system in order tight closure thereof for enabling ation of the door lock bolts, and in to operate the king bolts without first tightly closing the door by the operation of the pressure system.

In the bank robbers have past it has frequently occurred that locked bank officials in a safe or vault during the perpetration of a bank robbery; and one ob]e'ct of the present invention is to prevent such an undesired closing and locking of the safe or vault door by providing automatic means preventing the unauthorized operation of the vault door pressure said me system for closing the vault door, ans being fllltOIIlltlCZlllY' operative after each authorized opening of the vault door, locking only by key for and said automatic pressure system means being rendered inoperative the use of key operated means, the which presumably shall always be the operation of the pressure system, thereby enabling since safe or vault with the the operation of the main bolts; door systems provided present improvements are positively locked against operation by any unauthorized person excepting one who has surreptitiously obtained a suitable key for rendering inoperative the automatic pressure system lock.

A further and concurrent ob ect of the 111- vention 151 to provide positive means for preventing mechanism operatin In pressure systems at present 111 use, the

pressure ammed ,ating The f jamming of the pressure system by turning the pressure system g handle too far.

system operating mechanim may be by only a slight turning of the operhandle beyond a certain point.

or egoing and ancillary objects are attained by the use of a construction and arrangement hereinafter described in detail and illustrated in the accompanying drawings forming a part hereof, in which- Figure 1 is a front perspective View of a vault door provided with a pressure system and the present automatic lock therefor;

Fi 2, a detached fragmentary top plan view of the automatic pressure system lock and portions of the pressure system and vanllt, some of the portions being in section; anc I Fig. 3, an off-set sectional view thereof as on lines 3-3, Fig. 2.

Similar numerals refer to similar parts throughout the drawings.

A vault door indicated at 1, is hinged in a usual manner as by the hinge mechanism 1'" to the door frame 1", and is provided with a pressure system indicated generally at 2 and including preferably horizontal shafts 3 r0- tatable by rotation of the hand Wheel 4 connected to the shafts in a usual manner by suitable enclosed gearing 5 and 6 and stu shafts 7.

The ends of the shafts 3 are provided at 8 with cams 9 for cooperating with cam slots 10 in the cam housing 11 secured to the door frame 1 in a usual manner.

The cams 9 cooperate with the slots 10 upon operation of the pressure system by rotation of the handle 4: to apply pressure to the door and squeeze it home, so that the main lock bolts not shown, are registered with their wedge blocks and may be operated by suit able manipulation of the main lock handle 12.

It is impossible to manipulate the main lock handle 12 and operate the mainsafe lock bolts until the above described pressure system has been operated to tightly close the vault door.

In order to prevent unauthorized operation of the vault door pressure system, preferably the lower rotating shaft 3 is provided with an enclosed automatic lock, Which autoi'natically locks the whole pressure system mechanism when the same has been operated and the vault door opened.

For further operation of the'pressure System, the use of a key by an authorized person as at 13 is required inorder to render inoperative the automatic pressure system locking means and enable rotation of the shafts 3 to apply the necessary pressure to the vault door for closing the same.

In other words, the shafts 3 are automatically locked against rotation whenever the vault door is open, and require the use of a key in order to operate the pressure system.

Each shaft 3 is provided near the swinging vertical vaultdoor edge 14- with a bearing 15 through which the shaft extends and is journaled, and preferably the lower bearing 15 is provided with a centrally located aperture 16 extending from the door frame towards the lower shaft 3, and in which a plunger 17 is located.

The lower shaft 3 is provided with a socket 18, which registers with the aperture 17 when the pressure system has been oper ated for opening the vault door.

Between the plunger 17 and the vault door frame a compression spring 19 is located and the door frame end of the aperture 16 may be threaded and provided with a screw plug 20 for adjusting and maintaining the pressure of the spring 19 against the plunger 17.

Consequently when, by the operation'of the pressure system for opening the vault door, the socket 153 in the lower shaft 3 has been registered with the aperture 16, the plunger 17 will be thrust into the socket 18 by the action of the spring 19, and will thereby lock the lower shaft 3 against rotation and prevent any movement of the pressure system operating handle 4 until the plunger 17 has been withdrawn from the socket 18.

For Withdrawing the plunger 17 from the socket 18, the plunger 17 is provided with a slot 21 for operatively connecting the plunger with a rotatable arm 22 mounted upon the inner shaft end of a paracentric key lock cylinder 23 and rotatable only by the turning of a suitable key' inserted in the key slot 2% of the lock-cylinder.

The lock-cylinder is suitably mounted in the lower bearing 15 and secured therein as by means of the key screw '25, which prevents removal of the lock-cylinder.

The plunger 17 may be furthermore provided with a second guide slot 26 in which the inner end of a preferably vertical plunger screw guide 27 extends.

From the foregoing description, it ol vious that when the vault door is open, in order to operate the pressure system, it is necessary to insert a suitable key in the key slot 24 and to turn the same and withdraw the plunger 17 from the socket 18 in order to enable the shafts 3 to be rotated and the pressure system operated to tightly close the vault door.

Under usual conditions the pressure system is operated once a day at-the close of business and the authorized person having charge of the locking of the safe will be pro vided with the key to fit the key slot of the lock cylinder and release the automatic pressure system lock as aforesaid.

I claim:

1, In a vault door or the like, the combination of a pressure system for the door in cluding a rotating shaft, a bearing for the shaft, there being an aperture in the bearing, and there being a socket in the shaft for registering withthe aperture, a plunger in the bearing aperture, and means automatically moving the plunger lnto the shaft socket when the socket registers with the aperture.

2. In a vault door or the like, the combination of a pressure system for the door includ ing a rotating shaft, a bearing for the shaft there being an aperture in the bearing, and there being a socket in the shaft for registering with the aperture, a plunger in the bearingaperture, means automatically moving the plunger into the shaft socket when the socket registers with th aperture, and key operated means for withdrawing the plunger from the socket.

3. In a vault door or the like, the combination of a pressure system for the door including a rotating shaft, a bearing for the shaft, there being an aperture in the bca1'- ing, and there being a socket in the shaft for registering with the aperture,.a plunger in the bearing aperture, means automatically moving the plunger into the shaft socket when the socket registers with the aperture, and means for withdrawing the plunger from the socket.

4. In a vault door or the like, the combination of a pressure system for the door including stationary members and movable members including an operating shaft successively rotatable for operating the pressure system for permitting opening of the door and for operating the pressure system for permitting closing and locking of the door, and releasable means on one of the members operative independently of the position of the door for engagement with another member and automatically locking the shaft against further rotation after the shaft has been rotated to permit opening of the door.

5. lna vault door or the like, the combination of a pressure system for the door including stationary members and movable members including an operating shaft successively rotatable for operating the pressure system for permitting opening of the door and for operating the pressure system for permitting closing and locking of the door, releasable means on one of the members operative independently of, the position of the door for engagement with another member and automatically locking the shaft against further rotation after the shaft has been rotated to permit opening of the door, and means for releasing the automatic locking means.

6. In a vault door or the like, the comllm Bit

bination of a pressure system for the door including an operating shatt successively rotatable for operating the pressure system for permitting opening of the door and for operating the pressure system for permitting closing and locking of the door, releasable means operative independently of the position of the door and automatically locking the shaft against further rotation after the shaft has been rotated to permit. opening of the door, and key actuated means for re leasing the automatic locking means.

7 In a vault door or the like, the combination of a pressure system for the door including stationary members and movable members including an operating member successively movable for operating the pressure system for permitting opening of the door and for operating the pressure system for permitting closing and locking of the door, and releasable means on one of the members operative independently of the position of the door for engagement with another member and automatically locking the movable operating member against further movement after the member has been moved to permit opening of the door.

8. In a vault door or the like, the combination of a pressure system for the door including stationary members and movable members including an operating member successively movable for operating the pressure system for pemitting opening of the door and for operating the pressure system for permitting closing and locking of the door, releasable means on one of the members operative independently of the position of the door for engagement With another member and automatically locking the movable operating member against further movement after the member has been moved to permit opening of the door, and means for releasing the automatic locking means.

. 9. In vault door or the like, the combination of a pressure system for the door including stationary members and movable members including an operating member successively movable for operating the pressure system for permitting opening of the door and for operating the pressure system for permitting closing and locking of the door, and releasable means on one of the members operative independently of the posit-ion of the door for engagement With another member and automatically locking the movable operating member against further movement after the member has been moved to permit opening of the door, and key actuated means for releasing the automatic locking means.

In testimony that I claim the above, I have hereunto subscribed by name.

JOHN P. PAGA. 

